ASTROSAT CZTI

Data Quality Report

Orbit 36678

Creation date: 2024-06-27T21:30:09.342225
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_041T01_9000005234_36678cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36678cztM0_level2_quad_clean.evt
Size (bytes)459,322,560106,027,200
Size438.0 MB 101.1 MB
Events in quadrant A2,738,290717,431
Events in quadrant B3,015,852727,562
Events in quadrant C3,885,129703,438
Events in quadrant D3,895,913675,721

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116793
B0124132
C0148392
D0153412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5530220.397830%
B5530591.066908%
C55303195.768535%
D55301893.417722%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7323 5531 16 16 0.22% 0.29%
B 7323 5531 35 35 0.48% 0.63%
C 7323 5531 269 269 3.67% 4.86%
D 7323 5531 142 142 1.94% 2.57%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 206234 1606.49 638 625 128.0
A 9 143 39114 300.73 638 625 128.0
A 13 6 15417 115.57 638 625 128.0
B 0 189 200379 1651.51 637 620 121.0
B 5 255 176523 1454.28 637 620 121.0
B 0 221 29303 237.14 637 620 121.0
C 0 10 579927 4042.64 622 626 143.3
C 4 254 420791 2932.11 622 626 143.3
C 15 214 250641 1744.72 622 626 143.3
D 13 249 487456 3203.1 622 605 152.0
D 13 171 228809 1501.4 622 605 152.0
D 2 250 140412 919.82 622 605 152.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter